National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Monticello, Sullivan County International Airport (KMSV)

Lat: 41.7°NLon: 74.8°WElev: 1404ft.

Mostly Cloudy

54°F

12°C

Humidity 53%
Wind Speed NW 8 mph
Barometer 30.14 in (1020.2 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 21 May 2:56 am EDT
Extended Forecast for

2 Miles SW Grant Mills NY

Frost Advisory May 21, 11:00pm until May 22, 08:00am
Click here for hazard details and duration
Frost Advisory

  • Overnight

    Overnight: Mostly cloudy, with a low around 44. North wind around 5 mph.

    Low: 44 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 61. Northeast wind around 5 mph.

    High: 61 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Patchy frost after 5am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 38. Light northeast wind.

    Low: 38 °F

    Mostly Cloudy
    then Patchy
    Frost

  • Friday

    Friday: Patchy frost before 7am. Otherwise, mostly sunny, with a high near 65. East wind 3 to 5 mph.

    High: 65 °F

    Patchy Frost
    then Mostly
    Sunny

  • Friday Night

    Friday Night: A slight chance of showers after 2am. Mostly cloudy, with a low around 42. Calm wind. Chance of precipitation is 20%.

    Low: 42 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: Showers, mainly after 8am. High near 51. Chance of precipitation is 80%.

    High: 51 °F

    Showers

  • Saturday Night

    Saturday Night: Showers. Low around 39. Chance of precipitation is 90%.

    Low: 39 °F

    Showers

  • Sunday

    Sunday: Showers likely before 2pm. Mostly cloudy, with a high near 57. Chance of precipitation is 60%.

    High: 57 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Cloudy, with a low around 46.

    Low: 46 °F

    Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 44. North wind around 5 mph.
Thursday
Mostly cloudy, with a high near 61. Northeast wind around 5 mph.
Thursday Night
Patchy frost after 5am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 38. Light northeast wind.
Friday
Patchy frost before 7am. Otherwise, mostly sunny, with a high near 65. East wind 3 to 5 mph.
Friday Night
A slight chance of showers after 2am. Mostly cloudy, with a low around 42. Calm wind. Chance of precipitation is 20%.
Saturday
Showers, mainly after 8am. High near 51. Chance of precipitation is 80%.
Saturday Night
Showers. Low around 39. Chance of precipitation is 90%.
Sunday
Showers likely before 2pm. Mostly cloudy, with a high near 57. Chance of precipitation is 60%.
Sunday Night
Cloudy, with a low around 46.
Memorial Day
A chance of showers after 8am. Mostly cloudy, with a high near 69. Chance of precipitation is 50%.
Monday Night
Mostly cloudy, with a low around 50.
Tuesday
Partly sunny, with a high near 74.
Tuesday Night
Partly cloudy, with a low around 51.
Wednesday
Mostly sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Grant Mills NY
 42.06°N 74.71°W (Elev. 2201 ft)
Last Update:
2:30 am EDT May 21, 2026
Forecast Valid:
3am EDT May 21, 2026-6pm EDT May 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation